Parameter Identification and Validation of Microspeakers in Consideration of the Creep Effect

Zhao Y, Chen S, Pan K, Shen Y. Parameter Identification and Validation of Microspeakers in Consideration of the Creep Effect. J Audio Eng Soc. 2025;73(11):772-781. doi:10.17743/jaes.2022.0231

@article{Zhao2025_23108,
  author = {Zhao, Yilin and Chen, Simiao and Pan, Keyu and Shen, Yong},
  title = {{Parameter Identification and Validation of Microspeakers in Consideration of the Creep Effect}},
  journal = {Journal of the Audio Engineering Society},
  volume = {73},
  number = {11},
  pages = {772--781},
  year = {2025},
  month = nov,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2022.0231},
  url = {https://doi.org/10.17743/jaes.2022.0231}
}

TY  - JOUR
TI  - Parameter Identification and Validation of Microspeakers in Consideration of the Creep Effect
AU  - Zhao, Yilin
AU  - Chen, Simiao
AU  - Pan, Keyu
AU  - Shen, Yong
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 73
IS  - 11
SP  - 772
EP  - 781
PY  - 2025
DA  - 2025/11/10
DO  - 10.17743/jaes.2022.0231
UR  - https://doi.org/10.17743/jaes.2022.0231
PB  - Audio Engineering Society
LA  - en
AB  - The creep effect in the suspension system of microspeakers significantly influences their low-frequency displacement dynamics. Although theoretical models considering the creep effect have been established, the lack of a corresponding parameter identification method has hindered their practical implementation in loudspeaker active control systems. This paper presents a comprehensive parameter identification framework for microspeakers incorporating the creep effect. The creep-related parameters R2 and K2 are efficiently estimated through the linear displacement transfer function, followed by time-domain identification of other system parameters under nonlinear conditions. Experimental results show that, compared with models that neglect the creep effect, the proposed method markedly improves displacement prediction accuracy at low frequencies, highlighting its strong potential for practical applications.
ER  -